mx.theeml.com has no NS records.
NS records for this zone are defined at theeml.com.
NS records for this zone are defined at theeml.com.
Question and response
Question
dig mx.theeml.com. NS
Answer
The response has no answer records.
Authority
theeml.com. 600 SOA ns3-l2.nic.ru. admin.unisender.ru. 2024031309 1440 3600 2592000 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0